jenkins管道在GenericDownloadExecutor.java中出現莫名其妙的NullPointerException。52 -有解無憂

我按照本頁給出的例子，從JFrog artifactory下載工件。 https://www.jfrog.com/confluence/display/JFROG/Scripted Pipeline Syntax#ScriptedPipelineSyntax-UploadingandDownloadingFiles/a>

但是我一直得到NullPointerException。下面是腳本的輸出和錯誤：

[Pipeline] echo
下載規格 {
    "檔案"。[
        {
            "模式": "aod-libs-release/path-to-artifact/deployment/DM-DP-V3A.24-RELEASE/deployment-DM-DP-V3A.24-RELEASE.zip"。
            "目標"。"./artifacts"
        }, {
            "模式": "aod-libs-release/path-to-artifact/dm-auth-web-services/DM-AU-V3A.88-RELEASE/dm-auth-web-services-DM-AU-V3A.88-RELEASE.war"。
            "目標"。"./artifacts"
        }
    ]
}
[管道] echo
artifactory服務器 org.jfrog.hudson.pipeline.common.types.ArtifactoryServer@66026154
[管道] newBuildInfo
[管道] artifactoryDownload
[管線] 管線結束
java.lang.NullPointerException
    at org.jfrog.hudson.pipeline.common.executors.GenericDownloadExecutor.executor(GenericDownloadExecutor.java:52)
    at org.jfrog.hudson.pipeline.scripted.step.DownloadStep$Execution.runStep(DownloadStep.java：67)
    at org.jfrog.hudson.pipeline.scripted.step.DownloadStep$Execution.runStep(DownloadStep.java：53)
    at org.jfrog.hudson.pipeline.ArtifactorySynchronousNonBlockingStepExecution.run(ArtifactorySynchronousNonBlockingStepExecution.java：54)
    at org.jenkinsci.plugins.workflow.step.SynchronousNonBlockingStepExecution.lambda$start$0（SynchronousNonBlockingStepExecution.java:47）。
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    在java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    在java.lang.Thread.run(Thread.java:748)
完成了。失敗

下面是我的Jenkins流水線腳本

def artifactoryServer = Artifactory.server("Artifactory-instance-id")
artifactoryServer.connection.timeout = 300
def artifactDownloadSpec = ""{
    "檔案"。[
        {
            "模式": "aod-libs-release/path-to-artifact/deployment/${env.DP_VERSION}/deployment-${env.DP_VERSION}.zip"。
            "目標"。"./artifacts"
        }, {
            "模式": "aod-libs-release/path-to-artifact/dm-auth-web-services/${env.VERSION}/dm-auth-web-services-${env.VERSION}.war"。
            "目標"。"./artifacts"
        }
    ]
}"""

echo "download spec "   artifactDownloadSpec
echo "artifactory server "   artifactoryServer
artifactoryServer.download spec: artifactDownloadSpec

我在谷歌上搜索了GenericDownloadExecutor.java，發現了下面的代碼，但無法弄清楚我缺少的第52行需要什么。看起來像是一個欄位沒有被設定。

https://github.com/jenkinsci/artifactory-plugin/blob/master/src/main/java/org/jfrog/hudson/pipeline/common/executors/GenericDownloadExecutor.java

請幫助。事先謝謝你，祝你有個美好的一天。

uj5u.com熱心網友回復：

運行artifactoryServer.download步驟需要使用一個代理。例如：

Jenkins的腳本流水線

節點 {
  ...
  artifactoryServer.download spec: artifactDownloadSpec
  ...
}

Jenkins宣告式管道

推薦的方式是使用rtDownload步驟，然而，如果你仍然想使用artifactoryServer.download：

pipeline {
    agent any // <- 確保有一個活動的代理
    階段 {
        stage('Example') {
            步驟 {
                腳本 {
                  ...
                  artifactoryServer.download spec: artifactDownloadSpec
                  ...
                }
            }
        }
    }
}

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